The time may alternatively be followed by a time zone correction,
expressed as @samp{@var{s}@var{hh}@var{mm}}, where @var{s} is @samp{+}
or @samp{-}, @var{hh} is a number of zone hours and @var{mm} is a number
-of zone minutes. You can also separate @var{hh} from @var{mm} with a colon.
+of zone minutes.
+The zone minutes term, @var{mm}, may be omitted, in which case
+the one- or two-digit correction is interpreted as a number of hours.
+You can also separate @var{hh} from @var{mm} with a colon.
When a time zone correction is given this way, it
forces interpretation of the time relative to
Coordinated Universal Time (@sc{utc}), overriding any previous
specification for the time zone or the local time zone. For example,
@samp{+0530} and @samp{+05:30} both stand for the time zone 5.5 hours
-ahead of @sc{utc} (e.g., India). The @var{minute}
-part of the time of day may not be elided when a time zone correction
-is used. This is the best way to specify a time zone correction by
-fractional parts of an hour.
+ahead of @sc{utc} (e.g., India).
+This is the best way to
+specify a time zone correction by fractional parts of an hour.
+The maximum zone correction is 24 hours.
Either @samp{am}/@samp{pm} or a time zone correction may be specified,
but not both.